The negro instantly joined him, and they began creeping about in the darkness, seeking some way out.

A rudely laid foundation of limestone alone obstructed their path to the open air.

This had been laid in mortar, but of inferior quality, so that little difficulty was experienced in detaching sufficient to obtain hand hold.

Working silently, not knowing what watchers might be already stationed without, they succeeded in loosening enough of the rock to allow them to crawl through, lying breathless in the open.

Accustomed as they were to the darkness, they could yet see little.